public static ValidationResult ValidateZipCode(object value, ValidationContext validationContext)
{
// http://stackoverflow.com/questions/10165143/customvalidationattribute-specifed-method-not-being-called
// Above example seems to imply that:
// 1) object value is the value of ZipCode of the current instance of Person
// 2) validationContext is the current instance of Person which gives access to other property values of the current instance
// 3) validationContext can be used with dependent properties (http://msdn.microsoft.com/en-us/library/windows/apps/xx130659.aspx)
bool isValid = false;
try
{
if (value == null)
{
throw new ArgumentNullException("value");
}
if (validationContext == null)
{
throw new ArgumentNullException("validationContext");
}
var person = (Person)validationContext.ObjectInstance;
if (person.ZipCode.Length < 3)
{
return new ValidationResult(Resources.InvalidLengthErrorServerSide);
}
string code = person.State;
int zipCode = Convert.ToInt32(person.ZipCode.Substring(0, 3), CultureInfo.InvariantCulture);
State state = new StateRepository().GetAll().Where(s => s.Code == code).FirstOrDefault();
if (state != null)
{
List<string> ValidZipCodeRanges = new List<string>(state.ZipCodeRange.Split(new char[] { ',' }));
foreach (string range in ValidZipCodeRanges)
{
// If the first 3 digits of the Zip Code falls within the given range, it is valid.
int minValue = Convert.ToInt32(range.Split('-')[0], CultureInfo.InvariantCulture);
int maxValue = Convert.ToInt32(range.Split('-')[1], CultureInfo.InvariantCulture);
isValid = zipCode >= minValue && zipCode <= maxValue;
if (isValid) break;
}
}
}
catch (ArgumentNullException)
{
isValid = false;
}
if (isValid)
{
return ValidationResult.Success;
}
else
{
return new ValidationResult(Resources.InvalidValueErrorServerSide);
}
}
public static ValidationResult ValidateState(object value, ValidationContext validationContext)
{
bool isValid = false;
try
{
if (value == null)
{
throw new ArgumentNullException("value");
}
if (validationContext == null)
{
throw new ArgumentNullException("validationContext");
}
var person = (Person)validationContext.ObjectInstance;
string code = person.State;
List<State> states = new StateRepository().GetAll().ToList<State>();
foreach (State state in states)
{
if (state.Code == code)
{
isValid = true;
break;
}
}
}
catch (ArgumentNullException)
{
isValid = false;
}
if (isValid)
{
return ValidationResult.Success;
}
else
{
return new ValidationResult(Resources.InvalidValueErrorServerSide);
}
}